Reports should have a switch for installations that want to write direct db reports

There is a need to write reports that operate directly against the database using the sakai db connection. These reports should be configurable as to whether or not they are included in the deployment. The default configuration should be the normal data warehouse only setting so everything operates as normal. Also each report needs a setting as to whether or not it operates on the data warehouse or not. This option will determine which data source should be used: the data warehouse or the sakai data source. When the flag isn't set for a report then the code should assume it is a datawarehouse report.